Baking backfacing geometry

Ottomotto

Is there any way to bake backfacing geometry? I've made some cloth wrappings that twist over themselves and now I've realized bakers bake the backfacing faces with either a flipped normal direction, or ignore them entirely. Is there a way to bake them as if they were a double sided plane?

Dihemi

Depending on the render/baking device you're using you can always try a double sided material, might not always work. What does always work is giving your mesh thickness (shell modifier in 3ds Max, Panel loops in ZBrush. I'm certain Maya and Blender have an equivalent). The thickness itself can be a low or nearly non-existing value. What software are you using?

Ottomotto

I tried marmoset toolbag and subtance painter, was thinking of trying xnormal, but I've just gone and shelled the part like you said. Marmoset douse have an option to not ignore backfaces, but the normal is flipped so i don't really see how that option would ever be of much use.